java.lang.NullPointerException: Attempt to invoke interface method 'int java.util.List.size()' on a null object reference

GitHub | gauravjain131 | 2 weeks ago
  1. 0

    Getting NPE in onMeasure().

    GitHub | 2 weeks ago | gauravjain131
    java.lang.NullPointerException: Attempt to invoke interface method 'int java.util.List.size()' on a null object reference
  2. 0

    NPE when using include layout

    Stack Overflow | 7 months ago | leenolasco
    java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getVisibility()' on a null object reference
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  4. 0

    Recyclerview onMeasure java null pointer exception even though there is no recyclerview

    Stack Overflow | 2 years ago | Aditya Kiran
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.RecyclerView$LayoutManager.onMeasure(android.support.v7.widget.RecyclerView$Recycler, android.support.v7.widget.RecyclerView$State, int, int)' on a null object reference
  5. 0

    Null pointer reference on TextView inside Adapter

    Stack Overflow | 6 months ago | Lucas Nordmeyer
    java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.View.findViewById(int)' on a null object reference

  1. korman 1 times, last 8 months ago
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Root Cause Analysis

  1. java.lang.NullPointerException

    Attempt to invoke interface method 'int java.util.List.size()' on a null object reference

    at android.widget.ArrayAdapter.getCount()
  2. Android Platform
    View.measure
    1. android.widget.ArrayAdapter.getCount(ArrayAdapter.java:330)
    2. android.widget.ListView.onMeasure(ListView.java:1151)
    3. android.view.View.measure(View.java:17438)
    4. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
    5. android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
    6. android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
    7. android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
    8. android.view.View.measure(View.java:17438)
    8 frames
  3. in.til.popkorn
    SlidingUpPanelLayout.onMeasure
    1. in.til.popkorn.ui.widget.SlidingUpPanelLayout.onMeasure(SourceFile:802)
    1 frame
  4. Android Platform
    FrameLayout.onMeasure
    1. android.view.View.measure(View.java:17438)
    2. android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:728)
    3. android.widget.RelativeLayout.onMeasure(RelativeLayout.java:464)
    4. android.view.View.measure(View.java:17438)
    5. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
    6. android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
    6 frames
  5. Android v7
    ContentFrameLayout.onMeasure
    1. android.support.v7.widget.ContentFrameLayout.onMeasure(SourceFile:135)
    1 frame
  6. Android Platform
    FrameLayout.onMeasure
    1. android.view.View.measure(View.java:17438)
    2. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
    3. android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
    4. android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
    5. android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
    6. android.view.View.measure(View.java:17438)
    7. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
    8. android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
    9. android.view.View.measure(View.java:17438)
    10. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
    11. android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
    12. android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
    13. android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
    14. android.view.View.measure(View.java:17438)
    15. android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5464)
    16. android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
    16 frames
  7. Android
    PhoneWindow$DecorView.onMeasure
    1. com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2560)
    1 frame
  8. Android Platform
    ActivityThread.main
    1. android.view.View.measure(View.java:17438)
    2. android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2001)
    3. android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1166)
    4. android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1372)
    5. android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1054)
    6. android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5786)
    7. android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
    8. android.view.Choreographer.doCallbacks(Choreographer.java:580)
    9. android.view.Choreographer.doFrame(Choreographer.java:550)
    10. android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
    11. android.os.Handler.handleCallback(Handler.java:739)
    12. android.os.Handler.dispatchMessage(Handler.java:95)
    13. android.os.Looper.loop(Looper.java:135)
    14. android.app.ActivityThread.main(ActivityThread.java:5221)
    14 frames
  9. Java RT
    Method.invoke
    1. java.lang.reflect.Method.invoke(Method.java)
    2. java.lang.reflect.Method.invoke(Method.java:372)
    2 frames
  10. Android
    ZygoteInit.main
    1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:898)
    2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:693)
    2 frames